Abstract
The well-controlled and covalently cross-linked three-dimensional networks of graphene oxide hydrogels (GOHs) are realized by using two different diamines, such as o-phenylene diamine (oPDA) and p-phenylene diamine (pPDA). Amide linkages are formed between two graphene oxide (GO) sheets due to the condensation reaction between diamines and carboxylic acids on the GO sheets. The surface area and pore volume of pPDA-GOH are twice the size of those of oPDA-GOH due to the longer amine-to-amine distance. Aromatic amine-based hydrogels exhibit enhanced mechanical strength compared to that of aliphatic amine due to the presence of an aromatic ring between amide linkages. Highly-developed 3D networks of GOH fabricated by using pPDA facilitate the removal of organic dye such as methylene blue in aqueous solutions at various pH conditions. It also shows improved regeneration ability in repeated adsorption tests.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
